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公开(公告)号：JP2577794B2
公开(公告)日：1997-02-05
申请号：JP1491589
申请日：1989-01-24
Applicant: SUMITA OPTICAL GLASS
Inventor： KOMYA MASAYUKI , OOTSUKA MASAAKI , SAWANOBORI SHIGETO , NAGAHAMA SHINOBU
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